Fix running unit tests in set_up (#60)

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Author: thpierce

.github/actions/set_up/action.yml

@@ -39,6 +39,6 @@ runs:
         key: v7-build-tox-cache-${{ inputs.python_version }}-${{ inputs.package_name }}-${{ inputs.os }}-${{ hashFiles('tox.ini', 'dev-requirements.txt') }}
 
     - name: Run unit tests/benchmarks with tox
-      if: ${{ inputs.python_version == 'true' }}
+      if: ${{ inputs.run_unit_tests == 'true' }}
       shell: bash
       run: tox -f ${{ inputs.python_version }}-${{ inputs.package_name }} -- -ra --benchmark-json=${{ inputs.python_version }}-${{ inputs.package_name }}-${{ inputs.os }}-benchmark.json